Inking mechanism



Feb. 2, 1937. A. F. PITYO INKING MECHANISM 7 Filed Dec. 4, 1935 5 Sheets-Sheet l H N M T T A Feb. 2, 1937. A. F. PlTYO INKING MECHANISM Filed Dec. 4, 1935 I 5 Shets-Sheet 2 IN V EN TOR.

A TTORNEY Feb; 2, 1937. A. F. PITYO' INKING MECHANISM Filed Dec. 4, 1935 5 Sheets-Sheet 3 INVENTOR.

A9. ATTORNE A; F. PlTYO 0 INKING MECHANISM Feb. 2, 1937.

Filed Dec. 4, 1955 5 Sheets-Sheet 4 Q/VENTOR.

A TTORN E Y Feb. 2, 1937. A. F. PlTYO 2,069,504

INKING MECHANISM Filed Dec. 4, 1955 5 Sheets-Sheet 5 ATTORNEY Patented Feb. 2, 1937 UNITED STATES PATENT OFFICE.

INKING MECHANISM:

Application December 4, 1935; Serial No.=52,746

16- Claims.

This invention relates to mechanism for'inking reciprocating printing forms and more particularly to mechanism for inking inverted reciprocating printing forms. The invention relates to improvements over certain inking mechanism of this class containing spring means for bringing the form inking rollers into operation and which has certain defects, which tend to cause uncertain and abrupt action of the inking rollers against the form, causing uneven distribution of ink and resulting in defective printing.

Moreover, the inking of inverted printing forms is more difiicult and uncertain than for'those not inverted and my invention embodies improved means for overcoming the inherent difficulties of inking such forms and for producingxahigh speed mechanism of this type of greatly improved construction.

The principal object of the invention is toprovide a mechanism for inking an inverted reciprocating printing form which embodies an improved carriage for holding the form inking rollers, and which carriage is supplied-with ink from a source at one side of the machine and without the paths of operation of the form and its inking roller or rollers.

Another object is to provide positive means for guiding the form inking rollers and'to eliminate the faulty action of spring mechanisms which have been used in certain types of'inking mechanism.

A further object is to provide a carriage for theform inking rollers which includes a pair-of carriers which have a three point roller guiding or cam contact system which controls the movements of the form inking'roller or rollers.

Another object is to provide improvements in the supply roller system by providingmore even and self adjusting means for holding the various inking rollers in position and to impart suitable pressure to the same.

The means I prefer to employ for accomplishing the foregoing objects, together with other advantageous features of my improved inkingmechanism, are illustrated in the drawings accompanying and forming part of this specification, and in which- Fig. 1 is a vertical transverse section of a portion of a printing machine embodying myv improvements.

Fig. 2 is a front elevation of the same with certain parts in section.

Fig. 3 is a rear elevation of the same with certain parts in section.

Fig. 4 is a transverse vertical section of'aportio-ncfthe inking mechanism taken on the line 44'of-Fig. 3."

Fig; dis a detail end elevation of part of the feed-roller driving mechanism as seen from the left hand'in Fig. 2; 5

Fig. 6is adetail end elevation of the upper part of the machine as seen from the left in Fig; 3;

Fig. '7 is a plan of one end of one of the inking rollercarriages and the carrier therefor. 10

Fig; 8 is a side elevation of one of the carriers for the form inking roller carriages.

Fig; 9 is a detail side elevation of the inner portion or' 'branch of the same.

Fig. 10 is-aplan of said portion. 15

Fig. llis'a side elevation of the outer portion or branch of said carrier.

Fig. 12 is a plan of the same.

Fig; 13 is a detail side elevation of the cam for moving .theoscillating rollers. 2

Referringto the drawings, the numeral 2indicates the main machine bed and mounted thereon aretwo pedestals 3. one right hand and one left hand, and each having suitable guideways such as 5. Slidab-le in said guideways are the ex- 25 tensions l of the ram or'printing bed 6, and immediately below the printing bed is the printing platen 8'.

The printing bed or ram 6 is reciprocated by the pitinansv 9 whichextend downwardly through 30 the main machine bed 2 and are moved up and down byeccentrics l0 one of which is illustrated in Fig; I. Said eccentrics are mounted on the main drive-shaft II which is located below the main machine bed. The pitmans 9 are connected 35 with the ram 6' by means of the Wrist pins 12.

Rotatably mounted on the pedestals 3 are two rings I3 containing internally toothed gear portions' 14 which are driven by two pinion gears l5 mounted on the shaft Hi. The rings 13 have 49 roller bearings. I! and are provided with annular grooves: 18 in which bear the three guide blocks l9... so that therings are guided and rotate togetherabout the end parts of the ram 6.

Inward of; the rings l3 are mounted two-oppo- 5 sitely disposed cam structures 26, one around each end of the ram 6. The cam structures 20 are each. .composedof two parts, an upper stationary part 2 l, anoLa lower movable part 22, mounted on and reciprocating with the ram 6. 50

There are two inking roller carriages 24 for inking the printing form F. Each of said carriages is movable in an encircling path around the form- 'and 'between the two cam structures 28.

lmm di att yedjaccnt to the cam structures 20 5.5

at each end of the carriage is a movable carrier 25 forming part of the carriage 24. Each carrier is composed of an outer portion or branch 26, an inner portion or branch 21, and a bolt 28 to secure them together, said bolt being secured by the nut lock 29. Each of the outer portions has a slot 38 into which is fitted the tongue 3! of the inner portion or branch 21. A bore 33 is formed in the joint thus made in which an outer bushing 34 and an inner bushing 35 are placed and a bolt 36 is then put through the bushing 35, se-

curing the carrier to the ring l3, there being a nut 31 on the farther side of the ring which secures the bolt thereon. Each of the carriers has an anti-friction roller 39 on its respective inner portion or branch and adapted to operate in the.

cam groove 45 of the adjacent cam structure 20.

Each pair of carriers 25 is connected together by suitable means such as the framestructure 42, said structure preferably including a bar AS and two transverse members 44 one at each end of said bar. Two bearings 45 are provided in each of the members 44, in which are-journaled the shafts 46 of the form inking rollers 47. Mounted on the shafts 48 are the anti-friction rollers 49, one at each end of the inking roller 41 and adapted to roll on the cam surface 53 of the adjacent cam structure 28. The rollers 4Q are hereinafter referred to as the outer cam contacts or cam contact elements and the rollers 35, as the inner cam contacts or cam contact elements.

Referring to Fig. 4 it will be noted that each set of cam contacts or rollers contains three cam contacts and the contacts are arranged in a triangular relation to each other and their axes are normally in fixed relation to one another. This triangular cam contact construction rotates around in the adjacent cam structure and'around the end parts of the ram 6. The contours of the cam paths 40 and 50 of the cam structures '2!) are such that the carriers are positively held during their rotation, in the proper path to cause the form inking rollers 41 to alternately take ink from the supply roller 52 and deposit it on the printing form or plate F.

The form inking rollers 4! are readily removable from the carriage by reason of the carrier construction wherein each of the portions or branches 26 is provided with a hook shaped bearing 53 in which the pivots 54 of the frame structure 42 normally rest and are secured therein by latches 55 each having a notch 56 and whose free or operating ends are normally moved outwardly by springs 51.

The cam structures 20 are arranged so that the fixed and movable parts are always in operative connection, and to effect the connection of said parts, the adjacent portions are telescopically arranged, the fixed parts having slots 58 and the movable parts having tongues 59, the said tongues always bearing in said slots so that the cam paths or grooves 40 and the surfaces 59 are in effect continuous at all times and the cam contacts pass smoothly from one part to the other without abrupt action.

At the upper part of the machine is located the large ink-supply roller 52 of greater diameter than that of the remainder of the ink rollers, and its purpose is to supply ink to the carriages 26. There are two oscillating ink rollers BI and located near the ink fount 53, which is without the path of the carriages 24 and has the usual ink supply roller 65 which operates intermittently by mechanism not shown but which is well known in the art.

There is a carrying roller 55 which is moved to and fro between the fount roller 65 and the lower oscillating roller 62 means of the arms 38 on the shaft 39, the latter being moved by the crank Z0, connection rod H, and bell crank '22 having the anti-friction roller 13 moved by the cam M on the main shaft l i.

There is an ink roller 15 which carries the from the lower oscillating roller 62 to the upper oscillating roller There is also an ink roller 76 which carries the ink from the upper oscillating roller 6i to the large supply roller The bearing portions of the rollers 15 and '56 are journaled in yokes l3, one at each end, and said yoke:

are pivotally mounted on the pressure levers '12] by pivots said levers being pivoted about the shaft 8! of the oscillating roller and are connected together by the bars 82 and 590. The bar a normally pressed outwardly by the spricoiled around the rod. 84 between the collars so that pressure is brought to bear on the rollers '15 and '56 by means of the lever-3s "i9 and yokes E3. The levers ':'9 are held from s de rnction by means of the bolts 19a in the lever slots 12b.

Driving of the various ink rollers above described is eifected from the shaft 86 of the roller 52, which shaft is rotated by the sprocket 8?, chain 88, and a suitable sprocket (not shown) on the main shaft l l. At the other end of the shaft 86 is a spur gear 89 which drives the wide pinion 90, which in turn drives the gear 9| on the shaft 92 of the oscillating roller 6|. The gear 9| drives the wide pinion 93 which in turn drives the gear 94 on the shaft 8! of the lower oscillating roller 62. On the shaft 86 is a sprocket 95 which by means of the chain 96 drives the sprocket 9T journaled on the stud 88 together with the cam 99,

which by means of the anti-friction roller lflil operates the double forked lever ID! on the shaft I02 in the lugs 3a on the left hand pedestal 3. Collars 103 are secured to the shafts 8| and 92 of the oscillating rollers 62 and BI and said collars have grooves 104 in which pins I05 on the lever till) project so as to move the said shafts 8| and 92 together with the rollers 62 and SI to and fro.

There is a gear I08 on the shaft 86 which meshes with the gear H39 on the shaft l6 which rotates the rings l3 by means of the pinions l5.

The lower parts 22 of the cam structures 20 are preferably made separate from the casting of the ram 5, parts 22 through which are passed the bolts Hi to secure the said parts to the extensions H2 on the ram 5.

There is a segmental ink distributing member H4 located between the fixed cam part-s 2i and secured to the same by bolts H5 passed through the flanges N6 of said parts 2!. Bolts l l! passed through bolt holes H8 in the pedestals 3, secure the stationary cam parts 2!, together with the member H4, to said pedestals. There is a socket Ilsa in the member H4 in which the inner end of the rod 84 is seated.

The form inking rollers 41 and the ink rollers 15 and '16 are preferably covered with yielding material such as soft rubber which in the ex-- terior views of said rollers in the drawings is shown by stippling for the sake of clearness.

There are safety pins 526, one on each of the carrier portions 21, which function if the antifriction rollers 39 become detached by breaking of their pins 39a or for other cause. Thus the and lugs H!) are provided on the carriers will not. move tbut: a slight amountifrom trics it, whichlin 'turnmoveithe pitmansefiup and down causing the .ram .or formbed 6 to reciprocate. The chain 88. driveniby the sprocket onthe shaft! I causes thesprocket-BT to. rotate the shaft 85 and roller i52, the gear1-89'rotates the gears 95 SI, 93 and '94, and bymeans of said gears the rollers GI, 16, .62 and 15arerotated. The cam M, bell crank 72, connection rod H, shaft 59 and arms 58 causethe'roller- 66 to move back and forth between the-ink fount 63 and roller-.62, supplying ink to the latter, which together with the rollerfil is oscillated'by means of the camliiil. The ink is carried'from the roller 62 to the roller T5, thence to the-roller 6|, and from that to the roller-16, which transfers itto the carriage supply roller-52.

The carriages 24 are moved around the ram 6 and form 'F by means of the rings !3 driven by the pinions I5 011' the shaft l6, which is rotated by means of the gears I08 and I09 on the shaft The carriers'25 connect the remainder of the carriage to the rings l3 and the latter'pull the carriagesz i, which are guided positively by the anti-friction rollers 39 and-49, so that the form inking rollers 47 gather ink from the supply roller 52, carry it to the segmental distributing member H4 and further distribute it thereon, and thence carry it to the form F, being positively guided over said form by means of the cam paths 4!! and 50 adjacent thereto. This distribution of ink onto the form is uniform and the uneven action of spring pressed rollers is entirely eliminated by the foregoing carriage construction.

What I claim is:-

1. An inking mechanism for a reciprocating printing form embodying a carriage movable around said form and including a carrier on the carriage, a form inking roller thereon connected with the carrier, and two part cam structure engaged by said carrier for controlling the carriage and roller movement, one part of said cam structure movable with the printing form.

2. An inking mechanism for a reciprocating printing form embodying a carriage movable around said form and including two carriers one at each end, a frame connecting and pivoted in said carriers, a form inking roller on said frame, and cam structure engaged by said carriers for controlling the carriage and inking roller movement.

3. An inking mechanism for a reciprocating printing form embodying a carriage movable around said form and including two carriers one at each end, means to connect the carriers, a form inking roller on the carriage, and two encircling cam structures one for each carrier for controlling the movement thereof, each cam structure including two parts in connection with each other one of said parts movable with the printing form.

4. An inking mechanism for a reciprocating printing form embodying a carriage movable around said form and including two carriers one at each end, each carrier having an inner portion and an outer portion, two driving members one at each end, means whereby the pairs of inner outer carrier portions are connected to each other and pivoted to the adjacent driving memher, a form inking roller on the carriage and -movable therewith, and cam structure engaged by the carrier 'cam contact elements. for. controlling the carriage: and inking: roller' movement.

5. An inking mechanism for a reciprocating ,.printingt form embodyinga carrier driving mem- .ber. ascarriage movable.around-said form and inscludingxa :carrier :having an inner portion, an .onteruportiomta cam contact element at the rear ofa-each' of .saidqportions, means whereby they are .connected to eachother and pivoted to the car- .rier driving member attheir forward ends, a form inking'inoller on and movable with said carriage,

and cam structure engaged by the carrier cam contact elements for contr lling the carrier movement.

.6. An e'inkingmechanism for a reciprocating :printing form embodying a carriage movable around said form and including a carrier having I an inner portion, an outer portion, connecting means for saidportions, driving means for the carrier, said portions connected to the driving around-said form and including two carriers one at eachend, means to connect the carriers, a

form inking roller on said means, and two encircling cam structures one for each carrier for controlling its movement, each cam structure including two parts which are telescopic with relation to each other, one of said parts movable with the printing form.

8. An inking mechanism for a reciprocating printing form embodying a carriage movable around said form and including two carriers one at each end, means to connect the carriers, an outer cam contact for each carrier, an inner cam contact for each carrier, a form inking roller on the carriage, and two encircling cam structures one for each carrier for controlling its movement and having two cam paths, one to engage the outer cam contact and one to engage the inner cam contact, said cam structures each including a stationary part and a movable part.

9. An inking mechanism for a reciprocating printing form embodying a carriage movable around said form and including two carriers one at each end, each carrier having an inner portion and an outer portion locked at one end, carrier driving means, each carrier connected to its driving means at the locked end, structure to connect the carriers, a form inking roller mounted on said structure, and two encircling cam structures one for each carrier for controlling the movement thereof.

10. An inking mechanism for a reciprocating printing form embodying a carriage movable around said form and including two carriers one at each end, frame structure to connect the carriers, a form inking roller mounted on said structure, and two encircling cam structures one for each carrier for controlling its movement and each including a stationary part and a movable part.

11. An inking mechanism for a reciprocating printing form embodying a carriage movable around said form and including two carriers movable with said carriage one at each end, frame structure to connect the carriers, a form inking roller mounted on and rotatable on said structure,

and a cam structure for each carrier and engaged thereby Ior controlling its movement, each cam structure including a stationary part and a movable part.

12. In an inking mechanism, a carriage supply roller, two oscillating rollers in spaced relation to the supply roller, a feed roller joining the supply roller to the nearer oscillating roller, a feed roller joining the two oscillating rollers, two yokes each adjacent the ends of the two feed rollers and adapted to journal the same, and means to press said yokes toward the oscillating rollers and supply roller.

13. In an inking mechanism, a carriage supply roller, two oscillating rollers in spaced relation to the supply roller, a feed roller joining the supply roller to the nearer oscillating roller, a feed roller joining the two oscillating rollers, two yokes each adjacent the ends of the two feed rollers and adapted to journal the same, two pressure levers one for each yoke, and means to press the levers against said yokes.

14. An inking mechanism for a reciprocating printing form embodying a carriage movable around said form and including two carriers, two outer cam contacts for each carrier, an inner cam contact for each carrier, structure connecting the carriers and a form inking roller on said structure, means to rotate the carriers around said form, and two cam structures each substantially continuous, one for each carrier, each such structure having two parts one of which is movable with said form,

each of said structures having two cam paths, one for the outer cam contacts of its carrier and the other for the inner cam contact thereof and together eifective to control the carrier movement.

15. An inking mechanism for a reciprocating printing form comprising a carriage movable around said form and including two carriers one at each end, means to connect the carriers, a form inking roller on said means, two encircling cam structures one for each carrier for controlling its movements each cam structure including two parts which are telescopic with relation to each other, one of said parts movable with the printing form, and means to supply ink to the form inking roller.

16. An inking mechanism for a reciprocating printing form embodying a carriage movable around said form and including two carriers each carrier provided with an inner portion having a cam contact and an outer portion having a bearing at the rear end, structure connecting the carriers including two pivots one at each end carried respectively by said bearings and two transverse members respectively adjacent said pivots, a shaft journaled in said transverse members, a form king roller on said shaft, two cam rollers on said shaft one at each end, means to rotate the carriers around said form, and two cam structures each having two cam paths one for one of the first-mentioned cam contacts and the other for one of said cam rollers.

ALBERT F. PITYO. 

